I can't imagine that.. Can relate to cold bones and the like, but that's go for a walk and end up dead as disco stuff...like Liam in the grey....I spend half my life in the Arctic, 2 weeks up at work, two weeks at home. I've been doing this for 12 years and I can attest that below -25 F it doesn't all feel the same.
The coldest I've had to work in, before there was what we call "cold weather shutdown", was -113 F wind chill. I believe the ambient temp was in the low -70s F. I've regularly spent time in extreme cold my whole adult life, but there are certain times when it gets so cold that you can feel it down to your marrow for days after, no matter how warm your dressed or how well your covered up or how often you go warm up.
I really think -50 ambient is around where you hit that truly deep down cold that you tend to feel after.